Roller-cage for roller-bearings with convex rollers



E. H. W. WEIBULL.

ROLLER CAGE FOR ROLLER BEARINGS WITH CONVEX ROLLERS.

APPLICATION FILED SEPT. 21. 1919.

1,382,383. Patented June 21,1921.

Inven $01; flflllillfez'bul Attorney ERNST EJALHIAR WALODDI WEIBULL, OFGOTTENBORG, SWEDEN, ASSIGNOR T0 NORDISKA. EULLAGER AKTIEBOLAGE'I,

0F GOTTENBORG, SWEEN.

BDLLER-CAGE FOR BOLLEB-BEMGS WITH CONVEX ROLLERS.-

Specification of Letters Patent. Patented Jun 21, 1921 Application filedSeptember 8, 1918. Serial 170. 322,527.

To all whom it may concern Be it known that I, Enns'r HJALMAR WALODDIWEIBULL, a subject of the King of Sweden, residing at county ofGottenborg and Bohus and Kingdom of. Sweden, have invented new anduseful Improvements in Roller-Cages for Roller-Bearings with ConvexRollers, of which the following is a specification. v

This invention refers generally to roller bearings and more particularlyto roller cages wherein the rollers are flattened on two opposite sidesand formed with such a curvature, that the radius of the curvature tothe producer is larger than the radius of the roller proper, that istosay such selfadjusting roller bearings, where the axis of rotation ofthe convex roller always tends to adjust itself in a proper parallelismto the geometrical axis of the bearing. If such a bearing should beexposed to an axial strain, the rollers will adjust themselves in asloping position to the middle plane of the bearing in order, when thestrain ceases, to return to'the normal position, and accordingly a rller cage adapted to be used for such a bee ing, must admit the saidrocking motion without being overloaded.

The object of this invention is to provide a roller cage, of the clammentioned and consists prlncipally of the provision of a roller cagehaving pivots supportlng the rollers in such a way that the axes ofrotation of the rollers may assume a sloping position relatively to theaxis of the bearing in planes going through the axis of the bearin TheInvention is clearly illustrated in the accompanying drawings in which:Figure 1 is a side view of a portion of a roller cage with its rollersmounted therein, Fig. 2 shows a horizontal view of the same portion,Fig. shows a section of the roller cage on the line AB in Fig. 1, Fig. 4is a. side view of a portion of a roller cage according to a thirdembodiment, Fig. 5 shows a section of the same cage on the line A-B inFig. 4, and Fig. 6 shows a horizontal view ofthe parts in Fig. 4.

Referring to Figs. 13, 1 indicates a roller cage composed of two rin 1and 1", provided with recesses 2 for t e rollers 3 of the bearing, saidrings being joined in such a way, that the recesses 2 are positionedopposite each other, thus forming a chamber for Gottenborg, in the V therespective rollers 3. The recesses 2, which terminate with cylindricalsurfaces, have a diameter slightly larger than the diameter of therollers proper and the cage is arranged in such a way, as to be susended upon the rollers, when the row of re lers is mounted therein 1nurther according to this embodiment of the invention the recesses 2 arewidened on both sides of the bearing in radial direction above andbeneath planes going through the centers of the rollers while edges 11are formed axially opposite sides of the rollers, by means of whichedges and enlarged recesses the rollers are able to obtain an obliqueposition relatively to a plane perpendicular to the axis of the bearlng,simultaneously as the axes of rotation of the rollers are prevented frombeing displaced out of planes going through the central line of the axisof the bearing.

In Figs. 4- and 5 there is shown another embodiment of the invention,according to which the rollers 3 are provided with borings 4- centrallypositioned and widening at both sides from the middle plane of therollers.

Pins 5 pass through the borings 4;, and are fixed to rings 6 provided onthe sides of the row of rollers to support the rollers. On account ofthe double-conical shape of the borings 6 the rollers are able to obtaina sloping position relatively to the axis of the bearing, oscillatingupon the pins 5.

In the embodiment according to Figs. 4 and 5 each of the rollers isprovided withcentrally located conical recesses 7 on its flattened sideswhile pivots 51 are journaled in the recesses and are attached toflexible rings 6 which are in turn provided along both sides of the rowof rollers and having their flattened sides facing each other. Be sideseach pivot 51 is provided with a bladeshaped guiding spring 8, flexibleand applied along the flattened sides of the rollers. As will beapparent the sloping of the rollers toward the axis of the bearing ismade possible by means of the conical recesses cooperating with theconical ends 9 of the pivots 51 and the spring-action of the rin 6.

in Figs. 4, 5 and 6 there is illustrated a fourth embodiment of theinvention with and applied into the bearin the cage on the rings 10,

' Between the two rings there are provided vex rollers arranged in thecage and propivots 51 with conicalpoints 9, which pivots cooperate withthe conical recesses 7 in the rollers. The rings 10 are joined in asuitable manner for instance by means of cross,

brackets 15.

The embodiments shown are chosen merely as examples and I do not wanttolimit myself to these embodiments, but the details of the roller cagemay be varied within the scope of this invention.

Having thus particularly described and ascertained the nature of theinvention and in what 'manner the same is to be constructed what isclaimed to be new is i 1. In a roller bearing, a roller cage, convidedwith opposed flattened sides, supporting means on the cage cooperatingtherewith to allow the rollers to oscillate in a lateral directionrelatively to a plane perpendicular to the axis of the bearing, so thatthe axis of rotation of the rollers may obtain a sloping positionrelatiwely'to'the axis of the bearing 'in planes passing through thecenter line of the axis of the bearing, when the race rings are in theirnormal concentric position relative to each other.

2. In a roller bearing, a roller cage, including spaced flexible rings,convex rollers arranged between the rings and provided with axiallyopposed flattened sides and having conical recesses formed centrally ofsuch sides, conical pivots journaled in the recesses and blade-shapedsprings attached to the pivots and with the pivots attached to therings.

In testimony whereof I have affixed my signature.

ERNST HLIALMAR WALODD! WHBULL.

